TL;DR
An energy storage system is the battery installation — usually wall-mounted lithium iron phosphate units of 10 to 20 kilowatt-hours in homes — that stores solar production or cheap grid power for use during outages or peak-rate hours. Listed systems carry UL 9540 certification, and NEC Article 706 plus fire-code rules govern where they may sit, capacity limits per location, and clearances.
What it means
An energy storage system is the battery installation — usually wall-mounted lithium iron phosphate units of 10 to 20 kilowatt-hours in homes — that stores solar production or cheap grid power for use during outages or peak-rate hours. Listed systems carry UL 9540 certification, and NEC Article 706 plus fire-code rules govern where they may sit, capacity limits per location, and clearances. Paired with solar and a backup gateway, it determines which circuits stay live when the grid drops.
Where it sits in the glossary
Energy storage system is part of the Trade jargon group inside the ProFix Directory glossary. Browse every term in this category from the glossary index.
Why Ohio homeowners should know it
This is a term Ohio homeowners encounter when reading contractor quotes, hiring paperwork, or inspection reports. Understanding it well enough to ask one good follow-up question is usually all the protection a homeowner needs.
ProFix Directory keeps definitions short on the index page and saves the longer context — Ohio-specific rules, where the term comes from, and which ProFix tools touch it — for these per-term pages so the term is easy to cite and easy to share.
ProFix tools that touch this term
See also
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